EP2471391B1 - Cutting device for a rod maker of the tobacco processing industry and method for adjusting the position of a grinding wheel holder of an apparatus for grinding in a cutting device for a rod maker of the tobacco processing industry - Google Patents

Cutting device for a rod maker of the tobacco processing industry and method for adjusting the position of a grinding wheel holder of an apparatus for grinding in a cutting device for a rod maker of the tobacco processing industry Download PDF

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Publication number
EP2471391B1
EP2471391B1 EP11195526.6A EP11195526A EP2471391B1 EP 2471391 B1 EP2471391 B1 EP 2471391B1 EP 11195526 A EP11195526 A EP 11195526A EP 2471391 B1 EP2471391 B1 EP 2471391B1
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EP
European Patent Office
Prior art keywords
grinding wheel
wheel holder
cutting device
knife
grinding
Prior art date
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Application number
EP11195526.6A
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German (de)
French (fr)
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EP2471391A2 (en
EP2471391A3 (en
Inventor
Michael Lüneburg
Torsten Baustian
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koerber Technologies GmbH
Original Assignee
Hauni Maschinenbau GmbH
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Publication date
Application filed by Hauni Maschinenbau GmbH filed Critical Hauni Maschinenbau GmbH
Publication of EP2471391A2 publication Critical patent/EP2471391A2/en
Publication of EP2471391A3 publication Critical patent/EP2471391A3/en
Application granted granted Critical
Publication of EP2471391B1 publication Critical patent/EP2471391B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
    • B24B3/368—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades installed as an accessory on another machine
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/14—Machines of the continuous-rod type
    • A24C5/28—Cutting-off the tobacco rod
    • A24C5/30—Machines combined with devices for grinding the knives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00—Other grinding machines or devices
    • B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
    • B24B3/363—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of blades mounted on a turning drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/56—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter
    • B26D1/58—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is mounted on a movable arm or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/12—Means for treating work or cutting member to facilitate cutting by sharpening the cutting member

Definitions

  • the invention relates to a cutting device for a strand machine of the tobacco-processing industry, comprising a knife carrier with at least one knife holder, in each of which a knife is arranged, wherein the knife carrier mounted in a housing drive shaft and a drive for rotating driving the knife carrier about a rotation axis A.
  • the blade is adjustable in the radial direction relative to the blade holder, an adjusting device for adjusting the blade carrier to different formats, such that the angle ⁇ formed between the axis of rotation A of the drive shaft and the or each strand to be cut is changeable, and a Apparatus for grinding the or each blade during operation of the cutting device, the grinding apparatus comprising a grinding wheel holder having at least one grinding wheel and the grinding wheel holder connected to the housing of the drive shaft and de is arranged in the region of the knife carrier that the or each knife comes by the rotation of the knife carrier in contact with the or each grinding wheel, wherein the grinding wheel holder is associated with an adjusting device for automatically adjusting the position of the grinding wheel holder relative to the knife carrier.
  • the invention further relates to a method for adjusting the position of a grinding wheel holder of a device for grinding in a cutting device for a tobacco processing machine according to any one of claims 1 to 8, comprising the steps of: releasing the grinding wheel holder, adjusting the grinding wheel holder about the axis of rotation A. the drive shaft in the desired position, and fixing the grinding wheel holder.
  • Such cutters and methods are used in the tobacco processing industry to supply strands of, for example, tobacco, tobacco blends, filter material and other materials or combinations of materials common in the tobacco processing industry, individual rod shaped articles, namely tobacco sticks, filter rods, etc. to cut.
  • the rod-shaped articles are separated from a knife arranged on a knife carrier, which describes a running circle by the rotation of the knife carrier, when the knife strikes the strand to be cut substantially perpendicularly.
  • the knife is arranged in the radial direction adjustable in a knife holder, which in turn is adjustable, namely in particular rotatably arranged on or in the knife carrier.
  • the knife carrier itself is arranged with its drive shaft inclined to a strand (in a single-strand machine) or to the strands (in a multi-strand machine).
  • the axis of rotation A of the drive shaft is at an angle ⁇ to the or each strand.
  • strands or rod-shaped articles are processed, for example, with different diameters and / or different lengths, the so-called formats.
  • the adaptation to the different geometric relationships of the strands / articles is therefore also called format change.
  • the strand usually runs at a constant speed through the stranding machine. During cutting, the speeds of the strand on the one hand and the blade on the other hand must correspond. In other words, when cutting with the strand, the blade must move at the same speed to produce an optimal cut. At the time of cutting, the speed of the knife thus corresponds to the strand speed.
  • the rotational speed of the knife carrier is changed, which affects the knife speed.
  • the angle ⁇ must be readjusted accordingly.
  • a format change so the position of the knife carrier is changed to the or each strand.
  • the angle ⁇ is changed for a format change.
  • the knife holder itself is adjusted by the knife holder is rotated in the knife carrier until a position is reached in which the knife has reached at a different angle ⁇ with respect to the strand substantially vertical orientation.
  • the cutting device is usually associated with a grinding device.
  • a grinding device has a grinding wheel holder with at least one grinding wheel.
  • the grinding wheel holder is assigned to the knife carrier in such a way that grinding wheels arranged on cantilever arms of the grinding wheel holder protrude into the running circle of the knives. Due to the shape of the grinding wheel holder with the grinding wheels arranged on the cantilevers one speaks also of a grinding antler.
  • the grinding wheel holder itself is connected, for example via the housing, with the knife carrier, so that an adjustment of the knife carrier, ie a change in the angle ⁇ , inevitably leads to a corresponding adjustment of the grinding wheel holder.
  • the grinding wheel holder is stationary relative to the knife carrier, so does not rotate with the knife carrier.
  • the knife carrier is adjusted even in the inclination with respect to the angle ⁇ , which leads to the fact that the position of the grinding wheel holder changes accordingly.
  • the grinding wheel holder and thus of the or each grinding wheel also the grinding pattern changes.
  • the blade height is changed by the changed grinding pattern.
  • it requires an adjustment of the grinding wheel holder relative to the blade carrier, namely about the axis of rotation A of the drive shaft.
  • a cutting device with the features of the preamble of claim 1 is the DE 652 638 A refer to.
  • the invention is therefore an object of the invention to provide a cutting device which is optimized with respect to the adjustment of the grinding wheel positioning. Furthermore, the object is to propose an improved method for adjusting the position of the grinding wheel holder.
  • a cutting device of the type mentioned above in that the grinding wheel holder is rotatably mounted on the housing and the adjusting device comprises a drive and an actuator connecting the drive with the grinding wheel holder for adjusting the grinding wheel holder about the axis of rotation A.
  • the adjustment can be performed automatically and independently by an operator.
  • the inventive construction allows the automatic readjustment or rotation of the grinding wheel holder to the drive shaft of the knife carrier to restore the optimum grinding position in a format change, which is caused by a change in the angle ⁇ .
  • the automatic adjustment can also serve to deliberately create different grinding patterns or grinding heights on the or each knife. With the embodiment according to the invention, a simple and reproducible adjustment is ensured.
  • the device for grinding is associated with a clamping device for locking and releasing the grinding wheel holder.
  • This design enables fast and reliable locking and releasing, which simplifies automation.
  • a particularly preferred embodiment is characterized in that the clamping device comprises a brake disc and at least one clamping cylinder.
  • the clamping device comprises a brake disc and at least one clamping cylinder.
  • the cutting device is associated with a control and / or regulating system for controlling and / or regulating the position of the grinding wheel holder with respect to the blade carrier.
  • This supports automation in a particularly simple manner. The control / adjustment of the grinding wheel holder to the optimum position is thus ensured quickly and accurately.
  • control and / or regulation system is connected to a database in which a previously determined grinding wheel position is stored for each cutting format.
  • the grinding wheel holder stop means are assigned as a reference mark for the drive for adjusting the grinding wheel holder.
  • the cutting device comprises a measuring means which is designed and arranged for determining the position of the grinding wheel holder with respect to the knife carrier.
  • This embodiment ensures an adjustment of the grinding wheel holder independent of predetermined grinding positions.
  • the respectively suitable and optimal grinding position for each format can be determined directly and used to control the drive for adjusting the position of the grinding wheel holder relative to the knife carrier.
  • the object is also achieved by a method with the steps mentioned above in that the loosening, adjustment and fixing of the grinding wheel holder is performed automatically by an adjusting device.
  • the resulting benefits have been set forth in detail by the cutter, so reference is made to avoid repetition on the corresponding passages.
  • the cutting device shown in the figures is used for cutting strands of the tobacco processing industry, e.g. for cutting tobacco strands or filter strands.
  • the cutter shown is usually part of a rod making machine of the tobacco processing industry, but may e.g. also be used as an exchange component or as a single module.
  • the in the FIG. 1 schematically illustrated cutting device 10 comprises a knife carrier 11 with at least one knife holder 12.
  • a knife carrier 11 In the or each blade holder 12 is a respective adjustable blade 13 in the radial direction is arranged.
  • the knife carrier 11 is associated with a drive shaft 14 and a drive 15 for rotationally driving the knife carrier 11 about an axis of rotation A.
  • the drive shaft 14 is mounted correspondingly in a housing 16 of the cutting device 10.
  • the cutting device 10 comprises a not explicitly shown adjusting device for adjusting the knife carrier 11 to different formats. By means of the adjusting device, an angle ⁇ formed between the axis of rotation A and the or each strand 17 to be cut is variable.
  • the cutting device 10 has a device 18 for grinding, wherein the device 18 comprises a grinding wheel holder 19 with at least one grinding wheel 20.
  • the grinding wheel holder 19 is stationarily arranged in the area of the knife carrier 11 such that the or each knife 13 comes into contact with the or each grinding wheel 20 by the rotation of the knife carrier 11.
  • the knife carrier 11 has two knife holders 12, each with a radially adjustable blade 13.
  • the knife holders 12 are preferably evenly distributed over the circumference and lie on opposite sides of the knife carrier 11.
  • the knife holder 12 are rotatably mounted in the knife carrier 11 to change the position of the knife 13 to the strand 17 or can adjust.
  • the number and position of the knife holder 12 can of course vary.
  • the grinding wheel holder 19 can be assigned as a separate unit to the knife carrier 11 or e.g. be connected to the housing 16 of the drive shaft 14. There are different variants for the arrangement and fastening of the grinding wheel holder 19, as long as the grinding wheels 20 are in the operating mode in the running circle formed by the rotating blades 13.
  • the grinding wheel 19 is associated with an adjusting device 21 for automatically adjusting the position of the grinding wheel holder 20 relative to the blade carrier 11.
  • the cutting device 10 comprises an automatically actuatable adjusting mechanism, with which the grinding wheel holder 19 is adjustable about the axis of rotation A of the knife carrier 11, so that the position of the Grinding wheels 20 to the blades to be ground 13 to a changed angular position of the angle ⁇ is automatically adjustable.
  • the adjusting device 21 is thus designed and arranged to adjust the grinding wheels 20 about the axis of rotation A in the circumferential direction of the knife carrier 11.
  • the grinding wheel holder 19 is, as mentioned, arranged in the area of the knife carrier 11, so that the grinding wheels 20 come into contact with the latter during circulation of the knives 13 in order to achieve a desired grinding pattern.
  • it is preferably rotatably mounted on the housing 16, for example, the housing of the drive shaft 14, mounted.
  • the adjusting device 21 comprises a drive 22 and an actuator 23 connecting the drive 22 to the grinding wheel holder 19 for adjusting the grinding wheel holder 19 about the axis of rotation A.
  • a type of coupling connects the drive 22 with the grinding wheel holder 19.
  • the adjustment of the grinding wheel holder 19 is however, only guaranteed if the grinding wheel holder 19 is freely rotatable about the knife carrier 11.
  • the device 18 is optionally associated with a clamping device 24 for locking and releasing the grinding wheel holder 19 for grinding.
  • the clamping device 24 is also automatically actuated or triggered and comprises at least one brake disk 25 and at least one clamping cylinder 26.
  • two or more, and more preferably three clamping cylinder 26 are provided to improve or increase the frictional connection, which are distributed uniformly over the circumference .
  • the tensioning device 24 may also comprise a servomotor.
  • the locking effect is then achieved, for example, by a permanent energization of the servomotor.
  • the servo motor can also be assigned a gear.
  • the braking effect and thus the locking can be achieved via a corresponding gear ratio.
  • the cutting device 10 may be associated with a control and / or regulating system for selectively controlling and / or regulating the position of the grinding wheel holder 19 with respect to the knife carrier 11.
  • the control and / or regulating system is connected to a database in which a previously empirically, computationally or otherwise determined grinding wheel position is stored for each cutting format.
  • the corresponding position of the grinding wheel holder 19 is inevitably known with an adjustment of the angle ⁇ .
  • Each component e.g. the adjusting device for the knife carrier 11 or the adjusting device 21 for the grinding wheel holder 19, each have its own system.
  • a common, higher-level control and / or regulating system is provided by means of which the information relating to the adjustment of the knife carrier 11, ie the change in the angle ⁇ , processed and used for automatic adjustment of the grinding wheel holder 19.
  • the cutting device 10 may also include a measuring means, which is designed and arranged for determining the position of the grinding wheel holder 19 with respect to the knife carrier 11. Regardless of whether the cutting device 10 has measuring means for determining the position of the grinding wheel holder 19 or the adjustment takes place with the aid of a control and / or regulating system, the grinding wheel holder 19 can be associated with stop means as a reference mark for the drive 22 for adjusting the grinding wheel holder 19. By means of the stop means, a "zero position" can be defined for the grinding wheel holder 19 in order to determine or set the respectively optimum position for the grinding wheel holder 19.
  • each strand 17 of a first format is cut with the knives 13 into individual strand-like articles.
  • the knife carrier 11 is adjusted with respect to its inclination to the strand 17. In other words, the angle ⁇ is changed. If there is a connection between the knife carrier 11 and the grinding wheel holder 19, the adjustment of the knife carrier 11 inevitably leads to a corresponding adjustment of the grinding wheel holder 19, whereby the grinding pattern of the knife 13 changes. Therefore, with each format change, ie with each angular change in the angle ⁇ , the grinding wheel holder 19 must also be adjusted relative to the knife carrier 11, so that the grinding pattern matching the format can be produced on the knives 13.
  • the grinding wheel holder 19 is released, moved to the desired position and then fixed again.
  • the loosening, adjustment and fixing of the grinding wheel holder 19 is performed automatically by the adjusting device 21.
  • various variants are proposed below.
  • an associated position of the grinding wheel holder 19 is pre-determined and stored for each format, eg in the control of the drive 22 of the setting device, in a database or the like. With a format adjustment, the corresponding position is then retrieved and set.
  • the current position of the grinding wheel holder 19 can also be measured and then readjusted or readjusted accordingly.
  • the loosening and fixing of the grinding wheel holder 19 is effected in a preferred manner in that first a grinding wheel holder 19 fixing brake disk 25 is released to then adjust the new position by the drive 22 and the drive 22 with the grinding wheel holder 19 connecting actuator 23 before the Brake disc 22 after reaching the desired position for fixing the grinding wheel holder 19 by means of clamping cylinders 26 is stretched again.
  • Other clamping and releasing mechanisms are also used.
  • the servomotor is called, which locks the grinding wheel holder 19 with permanent energization and correspondingly triggers with reduced or missing energization.
  • the locking and releasing of the grinding wheel holder 19 can also be achieved via a transmission associated with the servo motor by means of a suitable gear ratio.

Description

Die Erfindung betrifft eine Schneideinrichtung für eine Strangmaschine der Tabak verarbeitenden Industrie, umfassend einen Messerträger mit mindestens einem Messerhalter, in dem jeweils ein Messer angeordnet ist, wobei dem Messerträger eine in einem Gehäuse gelagerte Antriebswelle sowie ein Antrieb zum rotierenden Antreiben des Messerträgers um eine Rotationsachse A zugeordnet ist, wobei das Messer in radialer Richtung verstellbar gegenüber dem Messerhalter ist, eine Stelleinrichtung zum Einstellen des Messerträgers auf unterschiedliche Formate, derart, dass der zwischen der Rotationsachse A der Antriebswelle und dem oder jedem zu schneidenden Strang gebildete Winkel β veränderbar ist, sowie eine Vorrichtung zum Schleifen des oder jedes Messers während des Betriebs der Schneideinrichtung, wobei die Vorrichtung zum Schleifen einen Schleifscheibenhalter mit mindestens einer Schleifscheibe aufweist und der Schleifscheibenhalter mit dem Gehäuse der Antriebswelle verbunden und derart im Bereich des Messerträgers angeordnet ist, dass das oder jedes Messer durch die Rotation des Messerträgers in Kontakt mit der oder jeder Schleifscheibe kommt, wobei dem Schleifscheibenhalter eine Stelleinrichtung zum automatischen Verstellen der Position des Schleifscheibenhalters relativ zum Messerträger zugeordnet ist.The invention relates to a cutting device for a strand machine of the tobacco-processing industry, comprising a knife carrier with at least one knife holder, in each of which a knife is arranged, wherein the knife carrier mounted in a housing drive shaft and a drive for rotating driving the knife carrier about a rotation axis A. is assigned, wherein the blade is adjustable in the radial direction relative to the blade holder, an adjusting device for adjusting the blade carrier to different formats, such that the angle β formed between the axis of rotation A of the drive shaft and the or each strand to be cut is changeable, and a Apparatus for grinding the or each blade during operation of the cutting device, the grinding apparatus comprising a grinding wheel holder having at least one grinding wheel and the grinding wheel holder connected to the housing of the drive shaft and de is arranged in the region of the knife carrier that the or each knife comes by the rotation of the knife carrier in contact with the or each grinding wheel, wherein the grinding wheel holder is associated with an adjusting device for automatically adjusting the position of the grinding wheel holder relative to the knife carrier.

Des Weiteren betrifft die Erfindung ein Verfahren zum Einstellen der Position eines Schleifscheibenhalters einer Vorrichtung zum Schleifen in einer Schneideinrichtung für eine Strangmaschine der Tabak verarbeitenden Industrie nach einem der Ansprüche 1 bis 8, umfassend die Schritte: Lösen des Schleifscheibenhalters, Verstellen des Schleifscheibenhalters um die Rotationsachse A der Antriebswelle in die gewünschte Position, und Fixieren des Schleifscheibenhalters.The invention further relates to a method for adjusting the position of a grinding wheel holder of a device for grinding in a cutting device for a tobacco processing machine according to any one of claims 1 to 8, comprising the steps of: releasing the grinding wheel holder, adjusting the grinding wheel holder about the axis of rotation A. the drive shaft in the desired position, and fixing the grinding wheel holder.

Solche Schneideinrichtungen und Verfahren kommen in der Tabak verarbeitenden Industrie zum Einsatz, um von Strängen, beispielsweise aus Tabak, Tabakmischungen, Filtermaterial und anderen in der Tabak verarbeitenden Industrie üblichen Materialien bzw. Materialkombinationen, einzelne stabförmige Artikel, nämlich entsprechend Tabakstöcke, Filterstäbe etc., zu schneiden. Die stabförmigen Artikel werden dazu von einem an einem Messerträger angeordneten Messer, das durch die Rotation des Messerträgers einen Laufkreis beschreibt, abgetrennt, wenn das Messer im Wesentlichen senkrecht auf den zu schneidenden Strang trifft. Das Messer ist in radialer Richtung verstellbar in einem Messerhalter angeordnet, der wiederum verstellbar, nämlich insbesondere drehbar an dem bzw. in dem Messerträger angeordnet ist. Der Messerträger selbst ist mit seiner Antriebswelle geneigt zu einem Strang (bei einer Einstrangmaschine) bzw. zu den Strängen (bei einer Mehrstrangmaschine) angeordnet. Anders ausgedrückt steht die Rotationsachse A der Antriebswelle in einem Winkel β zu dem oder jedem Strang.Such cutters and methods are used in the tobacco processing industry to supply strands of, for example, tobacco, tobacco blends, filter material and other materials or combinations of materials common in the tobacco processing industry, individual rod shaped articles, namely tobacco sticks, filter rods, etc. to cut. For this purpose, the rod-shaped articles are separated from a knife arranged on a knife carrier, which describes a running circle by the rotation of the knife carrier, when the knife strikes the strand to be cut substantially perpendicularly. The knife is arranged in the radial direction adjustable in a knife holder, which in turn is adjustable, namely in particular rotatably arranged on or in the knife carrier. The knife carrier itself is arranged with its drive shaft inclined to a strand (in a single-strand machine) or to the strands (in a multi-strand machine). In other words, the axis of rotation A of the drive shaft is at an angle β to the or each strand.

Auf einer Strangmaschine werden in der Regel unterschiedliche Formate verarbeitet. Das bedeutet, dass Stränge bzw. stabförmige Artikel z.B. mit unterschiedlichem Durchmesser und/oder unterschiedlicher Länge, den so genannten Formaten verarbeitet werden. Die Anpassung an die unterschiedlichen geometrischen Verhältnisse der Stränge/Artikel nennt man daher auch Formatwechsel. Der Strang läuft üblicherweise mit einer konstanten Geschwindigkeit durch die Strangmaschine. Während des Schneidens müssen sich die Geschwindigkeiten des Strangs einerseits und des Messers andererseits entsprechen. Anders ausgedrückt muss sich dass Messer beim Schneiden mit dem Strang mit gleicher Geschwindigkeit mitbewegen, um einen optimalen Schnitt zu erzeugen. Im Schnittzeitpunkt entspricht die Geschwindigkeit des Messers also der Stranggeschwindigkeit. Für einen Formatwechsel, beispielsweise eine veränderte Artikellänge, wird die Umdrehungsgeschwindigkeit des Messerträgers verändert, was sich auf die Messergeschwindigkeit auswirkt. Damit aber beim Schneiden das Messer mit dem Strang mit identischer Geschwindigkeit mitlaufen kann, muss der Winkel β entsprechend nachgestellt werden. Bei einem Formatwechsel wird also die Position des Messerträgers zu dem oder jedem Strang verändert. Anders ausgedrückt wird der Winkel β für einen Formatwechsel verstellt. Des Weiteren wird der Messerhalter selbst verstellt, indem der Messerhalter in dem Messerträger solange gedreht wird, bis eine Position erreicht ist, in der das Messer bei verändertem Winkel β eine bezüglich des Strangs im Wesentlichen senkrechte Ausrichtung erreicht hat. Solche Vorrichtungen und Verfahren sind hinlänglich bekannt, weshalb auf eine Detailbeschreibung verzichtet wird.On a stranding machine usually different formats are processed. This means that strands or rod-shaped articles are processed, for example, with different diameters and / or different lengths, the so-called formats. The adaptation to the different geometric relationships of the strands / articles is therefore also called format change. The strand usually runs at a constant speed through the stranding machine. During cutting, the speeds of the strand on the one hand and the blade on the other hand must correspond. In other words, when cutting with the strand, the blade must move at the same speed to produce an optimal cut. At the time of cutting, the speed of the knife thus corresponds to the strand speed. For a format change, for example a changed article length, the rotational speed of the knife carrier is changed, which affects the knife speed. However, in order for the knife to be able to follow the knife with the strand at the same speed when cutting, the angle β must be readjusted accordingly. In a format change so the position of the knife carrier is changed to the or each strand. In other words, the angle β is changed for a format change. Furthermore, the knife holder itself is adjusted by the knife holder is rotated in the knife carrier until a position is reached in which the knife has reached at a different angle β with respect to the strand substantially vertical orientation. Such devices and methods are well known, which is why a detailed description is omitted.

Um das oder jedes Messer am Messerträger während des Betriebs kontinuierlich schleifen zu können, ist der Schneideinrichtung üblicherweise eine Schleifvorrichtung zugeordnet. Eine solche Schleifvorrichtung weist einen Schleifscheibenhalter mit mindestens einer Schleifscheibe auf. Der Schleifscheibenhalter ist dem Messerträger derart zugeordnet, dass an Kragarmen des Schleifscheibenhalters angeordnete Schleifscheiben in den Laufkreis der Messer ragen. Durch die Form des Schleifscheibenhalters mit den an den Kragarmen angeordneten Schleifscheiben spricht man auch von einem Schleifgeweih. Der Schleifscheibenhalter selbst ist, beispielsweise über das Gehäuse, mit dem Messerträger verbunden, so dass eine Verstellung des Messerträgers, also eine Veränderung des Winkels β, zwangsläufig zu einer entsprechenden Verstellung des Schleifscheibenhalters führt. Allerdings ist der Schleifscheibenhalter gegenüber dem Messerträger ortsfest, rotiert also nicht mit dem Messerträger mit.In order to be able to continuously grind the or each blade on the knife carrier during operation, the cutting device is usually associated with a grinding device. Such a grinding device has a grinding wheel holder with at least one grinding wheel. The grinding wheel holder is assigned to the knife carrier in such a way that grinding wheels arranged on cantilever arms of the grinding wheel holder protrude into the running circle of the knives. Due to the shape of the grinding wheel holder with the grinding wheels arranged on the cantilevers one speaks also of a grinding antler. The grinding wheel holder itself is connected, for example via the housing, with the knife carrier, so that an adjustment of the knife carrier, ie a change in the angle β, inevitably leads to a corresponding adjustment of the grinding wheel holder. However, the grinding wheel holder is stationary relative to the knife carrier, so does not rotate with the knife carrier.

Bei einem Formatwechsel, wie er weiter oben beschrieben ist, wird der Messerträger selbst in der Neigung bezüglich des Winkels β verstellt, was dazu führt, dass sich auch die Position des Schleifscheibenhalters entsprechend verändert. Mit der veränderten Position des Schleifscheibenhalters und damit der oder jeder Schleifscheibe ändert sich auch das Schleifbild. Anders ausgedrückt wird die Messerhöhe durch das geänderte Schleifbild verändert. Um die optimale Schleifscheibenposition z.B. für eine gleichbleibende Messerhöhe zu erreichen, bedarf es daher einer Verstellung des Schleifscheibenhalters relativ zum Messerträger, und zwar um die Rotationsachse A der Antriebswelle. Mit anderen Worten existiert für jedes Format bzw. jede Formateinstellung des Messerträgers eine optimierte Schleifscheibenposition.In a format change, as described above, the knife carrier is adjusted even in the inclination with respect to the angle β, which leads to the fact that the position of the grinding wheel holder changes accordingly. With the changed position of the grinding wheel holder and thus of the or each grinding wheel also the grinding pattern changes. In other words, the blade height is changed by the changed grinding pattern. To obtain the optimum grinding wheel position e.g. To achieve a constant blade height, therefore, it requires an adjustment of the grinding wheel holder relative to the blade carrier, namely about the axis of rotation A of the drive shaft. In other words, there is an optimized grinding wheel position for each format or format setting of the knife carrier.

Bisher wird die Verstellung bzw. Einstellung der optimalen Schleifscheibenposition in Bezug auf den Messerträger für jede entsprechende Formateinstellung des Messerträgers manuell vorgenommen. Dazu werden Schrauben gelöst, mit denen der Schleifscheibenhalter am Gehäuse befestigt ist. Nach dem Lösen wird der Schleifscheibenhalter manuell um die Rotationsachse A der Antriebswelle gedreht, bis die optimale Schleifscheibenposition erreicht ist. Anschließend wird der Schleifscheibenhalter durch Festziehen der Schrauben wieder arretiert. Diese Einstellung ist nicht nur zeitaufwendig, sondern erfordert erhebliches Know-How, weshalb diese Einstellungstätigkeit nur von geschultem Fachpersonal durchgeführt werden kann.So far, the adjustment or adjustment of the optimal grinding wheel position with respect to the knife carrier for each corresponding format setting of the knife carrier is made manually. For this purpose, screws are released, with which the grinding wheel holder is attached to the housing. After loosening, the grinding wheel holder is manually rotated about the axis of rotation A of the drive shaft until the optimum grinding wheel position is reached. Then the grinding wheel holder is locked again by tightening the screws. This setting is not only time consuming, but requires considerable know-how, why this adjustment work can only be carried out by trained specialist personnel.

Eine Schneideinrichtung mit den Merkmalen des Oberbegriffes des Anspruches 1 ist der DE 652 638 A zu entnehmen.A cutting device with the features of the preamble of claim 1 is the DE 652 638 A refer to.

Der Erfindung liegt demnach die Aufgabe zugrunde, eine Schneideinrichtung zu schaffen, die bezüglich der Anpassung der Schleifscheibenpositionierung optimiert ist. Des Weiteren besteht die Aufgabe darin, ein verbessertes Verfahren zum Einstellen der Position des Schleifscheibenhalters vorzuschlagen.The invention is therefore an object of the invention to provide a cutting device which is optimized with respect to the adjustment of the grinding wheel positioning. Furthermore, the object is to propose an improved method for adjusting the position of the grinding wheel holder.

Diese Aufgabe wird durch eine Schneideinrichtung der eingangs genannten Art dadurch gelöst, dass der Schleifscheibenhalter drehbar auf dem Gehäuse gelagert ist und die Stelleinrichtung einen Antrieb sowie ein den Antrieb mit dem Schleifscheibenhalter verbindendes Betätigungselement zum Verstellen des Schleifscheibenhalters um die Rotationsachse A umfasst. Mit einer solchen Stelleinrichtung kann die Anpassung automatisch und unabhängig von einer Bedienperson ausgeführt werden. Die erfindungsgemäße Ausbildung ermöglicht das automatische Nachstellen bzw. Verdrehen des Schleifscheibenhalters um die Antriebswelle des Messerträgers, um bei einem Formatwechsel, der durch eine Veränderung des Winkels β herbeigeführt wird, die optimale Schleifposition wieder herzustellen. Die automatische Verstellung kann aber auch dazu dienen, um bewusst unterschiedliche Schleifbilder bzw. Schleifhöhen an dem oder jedem Messer zu erzeugen. Mit der erfindungsgemäßen Ausführungsform ist eine einfache und reproduzierbare Verstellung gewährleistet.This object is achieved by a cutting device of the type mentioned above in that the grinding wheel holder is rotatably mounted on the housing and the adjusting device comprises a drive and an actuator connecting the drive with the grinding wheel holder for adjusting the grinding wheel holder about the axis of rotation A. With such an adjustment device, the adjustment can be performed automatically and independently by an operator. The inventive construction allows the automatic readjustment or rotation of the grinding wheel holder to the drive shaft of the knife carrier to restore the optimum grinding position in a format change, which is caused by a change in the angle β. However, the automatic adjustment can also serve to deliberately create different grinding patterns or grinding heights on the or each knife. With the embodiment according to the invention, a simple and reproducible adjustment is ensured.

Vorteilhafterweise ist der Vorrichtung zum Schleifen eine Spanneinrichtung zum Arretieren und Lösen des Schleifscheibenhalters zugeordnet. Diese Ausbildung ermöglicht das schnelle und zuverlässige Arretieren und Lösen, was die Automation vereinfacht.Advantageously, the device for grinding is associated with a clamping device for locking and releasing the grinding wheel holder. This design enables fast and reliable locking and releasing, which simplifies automation.

Eine besonders bevorzugte Ausgestaltung ist dadurch gekennzeichnet, dass die Spanneinrichtung eine Bremsscheibe und mindestens einen Spannzylinder umfasst. Mittels der Spanneinrichtung werden auf einfache Weise eine sichere Arretierung und ein einfaches Lösen sichergestellt.A particularly preferred embodiment is characterized in that the clamping device comprises a brake disc and at least one clamping cylinder. By means of the clamping device a secure locking and easy release are ensured in a simple manner.

Eine vorteilhafte Weiterbildung zeichnet sich dadurch aus, dass der Schneideinrichtung ein Steuerungs- und/oder Regelungssystem zum Steuern und/oder Regeln der Position des Schleifscheibenhalters in Bezug auf den Messerträger zugeordnet ist. Damit wird die Automatisierung in besonders einfacher Weise unterstützt. Die Regelung/Verstellung des Schleifscheibenhalters auf die optimale Position ist damit schnell und exakt gewährleistet.An advantageous development is characterized in that the cutting device is associated with a control and / or regulating system for controlling and / or regulating the position of the grinding wheel holder with respect to the blade carrier. This supports automation in a particularly simple manner. The control / adjustment of the grinding wheel holder to the optimum position is thus ensured quickly and accurately.

Vorteilhafterweise ist das Steuerungs- und/oder Regelungssystem mit einer Datenbank, in der für jedes Schneidformat eine zuvor ermittelte Schleifscheibenposition gespeichert ist, verbunden. Eine weitere bevorzugte Option der Erfindung besteht darin, dass dem Schleifscheibenhalter Anschlagmittel als Referenzmarke für den Antrieb zum Verstellen des Schleifscheibenhalters zugeordnet sind. Diese Ausführungen unterstützen das automatische Verstellen, so dass eine schnelle und sichere Anpassung während des Betriebes der Schneideinrichtung, quasi on-line, erfolgen kann.Advantageously, the control and / or regulation system is connected to a database in which a previously determined grinding wheel position is stored for each cutting format. Another preferred option of the invention is that the grinding wheel holder stop means are assigned as a reference mark for the drive for adjusting the grinding wheel holder. These designs support the automatic adjustment, so that a fast and secure adjustment during operation of the cutting device, virtually on-line, can take place.

Eine zweckmäßige Weiterbildung der Erfindung ist dadurch gekennzeichnet, dass die Schneideinrichtung ein Messmittel umfasst, das zum Bestimmen der Position des Schleifscheibenhalters in Bezug auf den Messerträger ausgebildet und eingerichtet ist. Diese Ausführungsform gewährleistet eine Verstellung des Schleifscheibenhalters unabhängig von vorermittelten Schleifpositionen. Anders ausgedrückt kann die jeweils geeignete und optimale Schleifposition für jedes Format direkt ermittelt und zur Steuerung des Antriebs zur Verstellung der Position des Schleifscheibenhalters relativ zum Messerträger eingesetzt werden.An expedient development of the invention is characterized in that the cutting device comprises a measuring means which is designed and arranged for determining the position of the grinding wheel holder with respect to the knife carrier. This embodiment ensures an adjustment of the grinding wheel holder independent of predetermined grinding positions. In other words, the respectively suitable and optimal grinding position for each format can be determined directly and used to control the drive for adjusting the position of the grinding wheel holder relative to the knife carrier.

Die Aufgabe wird auch durch ein Verfahren mit den eingangs genannten Schritten dadurch gelöst, dass das Lösen, Verstellen und Fixieren des Schleifscheibenhalters automatisch durch eine Stelleinrichtung ausgeführt wird. Die sich daraus ergebenden Vorteile wurden anhand der Schneideinrichtung ausführlich dargelegt, weshalb zur Vermeidung von Wiederholungen auf die entsprechenden Passagen verwiesen wird.The object is also achieved by a method with the steps mentioned above in that the loosening, adjustment and fixing of the grinding wheel holder is performed automatically by an adjusting device. The resulting benefits have been set forth in detail by the cutter, so reference is made to avoid repetition on the corresponding passages.

Weitere zweckmäßige und/oder vorteilhafte Merkmale und Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der Beschreibung. Eine besonders bevorzugte Ausführungsform der Erfindung wird anhand der beigefügten Zeichnung näher erläutert. In der Zeichnung zeigt:

Fig. 1
eine schematische Darstellung einer Schneideinrichtung in Vorderansicht,
Fig. 2
die Schneideinrichtung gemäß Figur 1 ohne Messerträger,
Fig. 3
die Schneideinrichtung gemäß Figur 1 in Draufsicht,
Fig. 4
eine Schnittdarstellung der Schneideinrichtung gemäß Figur 2 entlang Schnitt IV-IV, und
Fig. 5
eine skizzenhafte Darstellung des Messerträgers mit einem Schleifscheibenhalter in einer mit einem Winkel β geneigten Position zu einem Strang.
Further expedient and / or advantageous features and developments of the invention will become apparent from the dependent claims and the description. A particularly preferred embodiment of the invention will be explained in more detail with reference to the accompanying drawings. In the drawing shows:
Fig. 1
a schematic representation of a cutting device in front view,
Fig. 2
the cutting device according to FIG. 1 without knife carrier,
Fig. 3
the cutting device according to FIG. 1 in plan view,
Fig. 4
a sectional view of the cutting device according to FIG. 2 along section IV-IV, and
Fig. 5
a sketchy representation of the knife carrier with a grinding wheel holder in an inclined position with an angle β to a strand.

Die in den Figuren dargestellte Schneideinrichtung dient zum Schneiden von Strängen der Tabak verarbeitenden Industrie, nämlich z.B. zum Schneiden von Tabaksträngen oder Filtersträngen. Die gezeigte Schneideinrichtung ist üblicherweise Bestandteil einer Strangmaschine der Tabak verarbeitenden Industrie, kann jedoch z.B. auch als Austauschkomponente oder auch als Einzelmodul eingesetzt werden.The cutting device shown in the figures is used for cutting strands of the tobacco processing industry, e.g. for cutting tobacco strands or filter strands. The cutter shown is usually part of a rod making machine of the tobacco processing industry, but may e.g. also be used as an exchange component or as a single module.

Die in der Figur 1 schematisch dargestellte Schneideinrichtung 10 umfasst einen Messerträger 11 mit mindestens einem Messerhalter 12. In dem oder jedem Messerhalter 12 ist ein jeweils in radialer Richtung verstellbares Messer 13 angeordnet. Dem Messerträger 11 ist eine Antriebswelle 14 sowie ein Antrieb 15 zum rotierenden Antreiben des Messerträgers 11 um eine Rotationsachse A zugeordnet. Die Antriebswelle 14 ist entsprechend in einem Gehäuse 16 der Schneideinrichtung 10 gelagert. Des Weiteren umfasst die Schneideinrichtung 10 eine nicht explizit dargestellte Stelleinrichtung zum Einstellen des Messerträgers 11 auf unterschiedliche Formate. Mittels der Stelleinrichtung ist ein zwischen der Rotationsachse A und dem oder jedem zu schneidenden Strang 17 gebildete Winkel β veränderbar. Um das oder jedes Messer 13 während des Betriebs der Schneideinrichtung 10 schleifen zu können, weist die Schneideinrichtung 10 eine Vorrichtung 18 zum Schleifen auf, wobei die Vorrichtung 18 einen Schleifscheibenhalter 19 mit mindestens einer Schleifscheibe 20 umfasst. Der Schleifscheibenhalter 19 ist ortfest derart im Bereich des Messerträgers 11 angeordnet, dass das oder jedes Messer 13 durch die Rotation des Messerträgers 11 in Kontakt mit der oder jeder Schleifscheibe 20 kommt.The in the FIG. 1 schematically illustrated cutting device 10 comprises a knife carrier 11 with at least one knife holder 12. In the or each blade holder 12 is a respective adjustable blade 13 in the radial direction is arranged. The knife carrier 11 is associated with a drive shaft 14 and a drive 15 for rotationally driving the knife carrier 11 about an axis of rotation A. The drive shaft 14 is mounted correspondingly in a housing 16 of the cutting device 10. Furthermore, the cutting device 10 comprises a not explicitly shown adjusting device for adjusting the knife carrier 11 to different formats. By means of the adjusting device, an angle β formed between the axis of rotation A and the or each strand 17 to be cut is variable. In order to be able to grind the or each blade 13 during the operation of the cutting device 10, the cutting device 10 has a device 18 for grinding, wherein the device 18 comprises a grinding wheel holder 19 with at least one grinding wheel 20. The grinding wheel holder 19 is stationarily arranged in the area of the knife carrier 11 such that the or each knife 13 comes into contact with the or each grinding wheel 20 by the rotation of the knife carrier 11.

In der beschriebenen Ausführungsform weist der Messerträger 11 zwei Messerhalter 12 mit jeweils einem radial verstellbaren Messer 13 auf. Die Messerhalter 12 sind vorzugsweise gleichmäßig über den Umfang verteilt und liegen auf entgegen gesetzten Seiten des Messerträgers 11. Die Messerhalter 12 sind drehbar im Messerträger 11 gelagert, um die Position des Messers 13 zum Strang 17 verändern bzw. einstellen zu können. Die Anzahl und Position der Messerhalter 12 kann selbstverständlich variieren. Der Schleifscheibenhalter 19 kann als separate Einheit dem Messerträger 11 zugeordnet oder z.B. mit dem Gehäuse 16 der Antriebswelle 14 verbunden sein. Für die Anordnung und Befestigung des Schleifscheibenhalters 19 gibt es unterschiedliche Varianten, solange die Schleifscheiben 20 im Betriebsmodus im durch die umlaufenden Messer 13 gebildeten Laufkreis liegen.In the described embodiment, the knife carrier 11 has two knife holders 12, each with a radially adjustable blade 13. The knife holders 12 are preferably evenly distributed over the circumference and lie on opposite sides of the knife carrier 11. The knife holder 12 are rotatably mounted in the knife carrier 11 to change the position of the knife 13 to the strand 17 or can adjust. The number and position of the knife holder 12 can of course vary. The grinding wheel holder 19 can be assigned as a separate unit to the knife carrier 11 or e.g. be connected to the housing 16 of the drive shaft 14. There are different variants for the arrangement and fastening of the grinding wheel holder 19, as long as the grinding wheels 20 are in the operating mode in the running circle formed by the rotating blades 13.

Solche bekannten und aus diesem Grunde nicht im Detail beschriebenen Schneideinrichtungen 10 sind erfindungsgemäß nunmehr dadurch weitergebildet, dass dem Schleifscheibenhalter 19 eine Stelleinrichtung 21 zum automatischen Verstellen der Position des Schleifscheibenhalters 20 relativ zum Messerträger 11 zugeordnet ist. Anders ausgedrückt umfasst die erfindungsgemäße Schneideinrichtung 10 einen automatisch betätigbaren Stellmechanismus, mit dem der Schleifscheibenhalter 19 um die Rotationsachse A des Messerträgers 11 verstellbar ist, so dass die Position der Schleifscheiben 20 zu den zu schleifenden Messern 13 an eine veränderte Winkelstellung des Winkels β automatisch anpassbar ist. Die Stelleinrichtung 21 ist somit ausgebildet und eingerichtet, um die Schleifscheiben 20 um die Rotationsachse A in Umfangsrichtung des Messerträgers 11 zu verstellen.Such known and therefore not described in detail cutting devices 10 are now further developed according to the invention that the grinding wheel 19 is associated with an adjusting device 21 for automatically adjusting the position of the grinding wheel holder 20 relative to the blade carrier 11. In other words, the cutting device 10 according to the invention comprises an automatically actuatable adjusting mechanism, with which the grinding wheel holder 19 is adjustable about the axis of rotation A of the knife carrier 11, so that the position of the Grinding wheels 20 to the blades to be ground 13 to a changed angular position of the angle β is automatically adjustable. The adjusting device 21 is thus designed and arranged to adjust the grinding wheels 20 about the axis of rotation A in the circumferential direction of the knife carrier 11.

Im Folgenden werden Weiterbildungen und/oder optionale Ausführungen der erfindungsgemäßen Schneideinrichtung 10 beschrieben, die einzeln oder in Kombination miteinander realisiert sein können.In the following, further developments and / or optional embodiments of the cutting device 10 according to the invention will be described, which can be realized individually or in combination with each other.

Der Schleifscheibenhalter 19 ist, wie erwähnt im Bereich des Messerträgers 11 angeordnet, so dass die Schleifscheiben 20 beim Umlauf der Messer 13 mit diesen zur Erzielung eines gewünschten Schleifbildes in Kontakt kommen. Dazu ist er bevorzugt drehbar auf dem Gehäuse 16, beispielsweise dem Gehäuse der Antriebswelle 14, gelagert. Die Stelleinrichtung 21 umfasst einen Antrieb 22 sowie ein den Antrieb 22 mit dem Schleifscheibenhalter 19 verbindendes Betätigungselement 23 zum Verstellen des Schleifscheibenhalters 19 um die Rotationsachse A. Mit anderen Worten verbindet eine Art Koppel den Antrieb 22 mit dem Schleifscheibenhalter 19. Die Verstellung des Schleifscheibenhalters 19 ist jedoch nur dann gewährleistet, wenn der Schleifscheibenhalter 19 frei drehbar um den Messerträger 11 ist. Aus diesem Grund ist der Vorrichtung 18 zum Schleifen optional eine Spanneinrichtung 24 zum Arretieren und Lösen des Schleifscheibenhalters 19 zugeordnet. Die Spanneinrichtung 24 ist ebenfalls automatisch betätigbar bzw. auslösbar und umfasst mindestens eine Bremsscheibe 25 und mindestens einen Spannzylinder 26. Vorzugsweise sind jedoch zur Verbesserung bzw. Erhöhung des Kraftschlusses zwei oder mehr und besonders bevorzugt drei Spannzylinder 26 vorgesehen, die gleichmäßig über den Umfang verteilt sind. Mittels der hydraulischen, pneumatischen oder in anderer bekannter Weise betätigbaren Spannzylinder 26 ist die Bremsscheibe 25 aus einer Halteposition für den Schleifscheibenhalter 19 in eine Freigabeposition und umgekehrt bringbar. Alternativ kann die Spanneinrichtung 24 auch einen Servomotor umfassen. Die Arretierungswirkung wird dann z.B. durch eine permanente Bestromung des Servomotors erreicht. Optional kann dem Servomotor auch ein Getriebe zugeordnet sein. In diesem Fall kann die Bremswirkung und damit die Arretierung über eine entsprechende Getriebeübersetzung erzielt werden.The grinding wheel holder 19 is, as mentioned, arranged in the area of the knife carrier 11, so that the grinding wheels 20 come into contact with the latter during circulation of the knives 13 in order to achieve a desired grinding pattern. For this purpose, it is preferably rotatably mounted on the housing 16, for example, the housing of the drive shaft 14, mounted. The adjusting device 21 comprises a drive 22 and an actuator 23 connecting the drive 22 to the grinding wheel holder 19 for adjusting the grinding wheel holder 19 about the axis of rotation A. In other words, a type of coupling connects the drive 22 with the grinding wheel holder 19. The adjustment of the grinding wheel holder 19 is however, only guaranteed if the grinding wheel holder 19 is freely rotatable about the knife carrier 11. For this reason, the device 18 is optionally associated with a clamping device 24 for locking and releasing the grinding wheel holder 19 for grinding. The clamping device 24 is also automatically actuated or triggered and comprises at least one brake disk 25 and at least one clamping cylinder 26. Preferably, however, two or more, and more preferably three clamping cylinder 26 are provided to improve or increase the frictional connection, which are distributed uniformly over the circumference , By means of the hydraulic, pneumatic or otherwise known manner operable clamping cylinder 26, the brake disc 25 from a holding position for the grinding wheel holder 19 in a release position and vice versa can be brought. Alternatively, the tensioning device 24 may also comprise a servomotor. The locking effect is then achieved, for example, by a permanent energization of the servomotor. Optionally, the servo motor can also be assigned a gear. In this case, the braking effect and thus the locking can be achieved via a corresponding gear ratio.

Der Schneideinrichtung 10 kann zum gezielten Steuern und/oder Regeln der Position des Schleifscheibenhalters 19 in Bezug auf den Messerträger 11 ein Steuerungs- und/oder Regelungssystem zugeordnet sein. Vorzugsweise ist das Steuerungs- und/oder Regelungssystem mit einer Datenbank verbunden, in der für jedes Schneidformat eine zuvor empirisch, rechnerisch oder anderweitig ermittelte Schleifscheibenposition gespeichert ist. Durch diese Zuordnung ist bei einer Verstellung des Winkels β zwangsläufig die korrespondierende Position des Schleifscheibenhalters 19 bekannt. Jede Komponente, also z.B. die Stelleinrichtung für den Messerträger 11 oder die Stelleinrichtung 21 für den Schleifscheibenhalter 19, kann jeweils über ein eigenes System verfügen. Bevorzugt ist jedoch ein gemeinsames, übergeordnetes Steuerungs- und/oder Regelungssystem vorgesehen, mittels dem die Informationen bezüglich der Verstellung des Messerträgers 11, also der Veränderung des Winkels β, verarbeitet und zur automatischen Verstellung des Schleifscheibenhalters 19 eingesetzt werden.The cutting device 10 may be associated with a control and / or regulating system for selectively controlling and / or regulating the position of the grinding wheel holder 19 with respect to the knife carrier 11. Preferably, the control and / or regulating system is connected to a database in which a previously empirically, computationally or otherwise determined grinding wheel position is stored for each cutting format. By this assignment, the corresponding position of the grinding wheel holder 19 is inevitably known with an adjustment of the angle β. Each component, e.g. the adjusting device for the knife carrier 11 or the adjusting device 21 for the grinding wheel holder 19, each have its own system. Preferably, however, a common, higher-level control and / or regulating system is provided by means of which the information relating to the adjustment of the knife carrier 11, ie the change in the angle β, processed and used for automatic adjustment of the grinding wheel holder 19.

Alternativ kann die Schneideinrichtung 10 auch ein Messmittel umfassen, das zum Bestimmen der Position des Schleifscheibenhalters 19 in Bezug auf den Messerträger 11 ausgebildet und eingerichtet ist. Unabhängig davon, ob die Schneideinrichtung 10 Messmittel zur Bestimmung der Position des Schleifscheibenhalters 19 aufweist oder die Verstellung mit Hilfe eines Steuerungs- und/oder Regelungssystems erfolgt, können dem Schleifscheibenhalter 19 Anschlagmittel als Referenzmarke für den Antrieb 22 zum Verstellen des Schleifscheibenhalters 19 zugeordnet sein. Mittels der Anschlagmittel lässt sich eine "Nullstellung" für den Schleifscheibenhalter 19 definieren, um davon ausgehend die jeweils optimale Position für den Schleifscheibenhalter 19 zu ermitteln bzw. einzustellen.Alternatively, the cutting device 10 may also include a measuring means, which is designed and arranged for determining the position of the grinding wheel holder 19 with respect to the knife carrier 11. Regardless of whether the cutting device 10 has measuring means for determining the position of the grinding wheel holder 19 or the adjustment takes place with the aid of a control and / or regulating system, the grinding wheel holder 19 can be associated with stop means as a reference mark for the drive 22 for adjusting the grinding wheel holder 19. By means of the stop means, a "zero position" can be defined for the grinding wheel holder 19 in order to determine or set the respectively optimum position for the grinding wheel holder 19.

Im Folgenden wird das Verfahrensprinzip anhand der Zeichnung näher erläutert: Der oder jeder Strang 17 eines ersten Formats wird mit den Messern 13 in einzelne strangförmige Artikel geschnitten. Für einen Formatwechsel wird der Messerträger 11 bezüglich seiner Neigung zum Strang 17 verstellt. Mit anderen Worten wird der Winkel β verändert. Wenn eine Verbindung zwischen dem Messerträger 11 und dem Schleifscheibenhalter 19 besteht, führt die Verstellung des Messerträgers 11 zwangsläufig zu einer entsprechenden Verstellung des Schleifscheibenhalters 19, wodurch sich das Schleifbild der Messer 13 verändert. Mit jedem Formatwechsel, also mit jeder Winkelveränderung des Winkels β, muss daher auch der Schleifscheibenhalter 19 relativ zum Messerträger 11 eingestellt werden, damit das zum Format passende Schleifbild an den Messern 13 erzeugt werden kann. Dazu wird der Schleifscheibenhalter 19 gelöst, in die gewünschte Position bewegt und dann wieder fixiert. Erfindungsgemäß wird das Lösen, Verstellen und Fixieren des Schleifscheibenhalters 19 automatisch durch die Stelleinrichtung 21 ausgeführt. Zur automatischen Verstellung werden im Folgenden verschiedene Varianten vorgeschlagen. Zum einen wird für jedes Format eine zugehörige Position des Schleifscheibenhalters 19 vorermittelt und gespeichert, z.B. in der Steuerung des Antriebs 22 der Stelleinrichtung, in einer Datenbank oder dergleichen. Bei einer Formatverstellung wird dann die zugehörige Position abgerufen und eingestellt. Zum anderen kann die aktuelle Position des Schleifscheibenhalters 19 auch gemessen und dann entsprechend nachgestellt bzw. nachgeregelt werden.The method principle is explained in more detail below with reference to the drawing: The or each strand 17 of a first format is cut with the knives 13 into individual strand-like articles. For a format change, the knife carrier 11 is adjusted with respect to its inclination to the strand 17. In other words, the angle β is changed. If there is a connection between the knife carrier 11 and the grinding wheel holder 19, the adjustment of the knife carrier 11 inevitably leads to a corresponding adjustment of the grinding wheel holder 19, whereby the grinding pattern of the knife 13 changes. Therefore, with each format change, ie with each angular change in the angle β, the grinding wheel holder 19 must also be adjusted relative to the knife carrier 11, so that the grinding pattern matching the format can be produced on the knives 13. For this purpose, the grinding wheel holder 19 is released, moved to the desired position and then fixed again. According to the invention, the loosening, adjustment and fixing of the grinding wheel holder 19 is performed automatically by the adjusting device 21. For automatic adjustment, various variants are proposed below. On the one hand, an associated position of the grinding wheel holder 19 is pre-determined and stored for each format, eg in the control of the drive 22 of the setting device, in a database or the like. With a format adjustment, the corresponding position is then retrieved and set. On the other hand, the current position of the grinding wheel holder 19 can also be measured and then readjusted or readjusted accordingly.

Das Lösen und Fixieren des Schleifscheibenhalters 19 erfolgt in bevorzugter Weise dadurch, dass zunächst eine den Schleifscheibenhalter 19 fixierende Bremsscheibe 25 gelöst wird, um anschließend die neue Position durch den Antrieb 22 und das den Antrieb 22 mit dem Schleifscheibenhalter 19 verbindende Betätigungselement 23 einzustellen, bevor die Bremsscheibe 22 nach dem Erreichen der gewünschten Position zum Fixieren des Schleifscheibenhalters 19 mittels Spannzylindern 26 wieder gespannt wird. Andere Spann- und Lösemechanismen sind aber ebenfalls einsetzbar. Rein beispielhaft ist der Servomotor genannt, der den Schleifscheibenhalter 19 bei permanenter Bestromung arretiert und entsprechend bei reduzierter bzw. fehlender Bestromung löst. Das Arretieren und Lösen des Schleifscheibenhalters 19 kann auch über ein dem Servomotor zugeordnetes Getriebe mittels einer geeigneten Getriebeübersetzung erreicht werden.The loosening and fixing of the grinding wheel holder 19 is effected in a preferred manner in that first a grinding wheel holder 19 fixing brake disk 25 is released to then adjust the new position by the drive 22 and the drive 22 with the grinding wheel holder 19 connecting actuator 23 before the Brake disc 22 after reaching the desired position for fixing the grinding wheel holder 19 by means of clamping cylinders 26 is stretched again. Other clamping and releasing mechanisms are also used. Purely by way of example, the servomotor is called, which locks the grinding wheel holder 19 with permanent energization and correspondingly triggers with reduced or missing energization. The locking and releasing of the grinding wheel holder 19 can also be achieved via a transmission associated with the servo motor by means of a suitable gear ratio.

Claims (10)

  1. Cutting device (10) for a rod maker of the tobacco processing industry, comprising a knife carrier (11) with at least one knife holder (12) in which in each case a knife (13) is arranged, wherein a drive shaft (14) mounted in a housing (16) and a drive (15) are allocated to the knife carrier (11) such as to drive the knife carrier (11) so as to rotate about an axis of rotation A, wherein the knife (13) is adjustable in relation to the knife holder (12), an adjustment device for the adjustment of the knife carrier (11) to different formats in such a way that an angle β formed between the axis of rotation A of the drive shaft (14) and the or every rod (17) which is to be cut, can be changed, and an apparatus (18) for grinding the or every knife (13) during the operation of the cutting device (10), wherein the apparatus (18) for grinding comprises a grinding wheel holder (19) with at least one grinding wheel (20), and the grinding wheel holder (19) is connected to the housing (16) of the drive shaft (14) and is arranged in the region of the knife carrier (11) in such a way the or every knife (13), due to the rotation of the knife carrier (11), comes in contact with the or every grinding wheel (20), wherein an adjustment device (21) is allocated to the grinding wheel holder (19) for the automatic adjustment of the position of the grinding wheel holder (19) relative to the knife carrier (11), characterized in that the grinding wheel holder (19) is rotatably mounted on the housing (16) and the adjustment device (21) comprises a drive (22) and an actuation element (23) connecting the drive (22) to the grinding wheel holder (19) in order to adjust the grinding wheel holder (19) about the axis of rotation A.
  2. Cutting device according to claim 1, characterized in that for locking and releasing of the grinding wheel holder (19) a clamping device (24) is allocated to the apparatus (18) for grinding.
  3. Cutting device according to claim 2, characterized in that the clamping device (24) comprises at least one brake disk (25) and at least one clamping cylinder (26).
  4. Cutting device according to claim 2 or 3, characterized in that the clamping device (24) comprises a servomotor, to which a gear unit is optionally allocated.
  5. Cutting device according to any one of claims 1 to 4, characterized in that a control and/or regulating system is allocated to the cutting device (10) for controlling and/or regulating the position of the grinding wheel holder (19) in relation to the knife carrier (11).
  6. Cutting device according to claim 5, characterized in that the controlling and/or regulating system is connected to a databank, in which is stored a previously determined grinding wheel position for every cutting format.
  7. Cutting device according to any one of claims 1 to 6, characterized in that the cutting device (10) comprises measuring means which are configured and equipped for determining the position of the grinding wheel holder (19) in relation to the knife carrier (11).
  8. Cutting device according to any one of claims 1 to 7, characterized in that stop means are allocated to the grinding wheel holder (19) as a reference marker for the drive for adjusting the grinding wheel holder (19).
  9. Method for adjusting the position of a grinding wheel holder (19) of an apparatus (18) for grinding in a cutting device (10) for a rod maker of the tobacco processing industry according to any one of claims 1 to 8, comprising the steps:
    - Releasing the grinding wheel holder (19),
    - adjusting the grinding wheel holder (19) about the axis of rotation A of the drive shaft (14) into the desired position, and
    - fixing the grinding wheel holder (19),
    characterized in that the releasing, adjusting, and fixing of the grinding wheel holder (19) is carried out automatically by an adjustment device (21).
  10. Method according to claim 9, characterized in that, first, a brake disk (25) fixing the grinding wheel holder (19) is released, in order then for the new position to be adjusted by a drive (22) and an actuating element (23) connecting the drive (22) to the grinding wheel holder (19), before the brake disk (25) is tightened again by the clamping cylinder (26), after reaching the desired position, in order to fix the grinding wheel holder (19).
EP11195526.6A 2010-12-28 2011-12-23 Cutting device for a rod maker of the tobacco processing industry and method for adjusting the position of a grinding wheel holder of an apparatus for grinding in a cutting device for a rod maker of the tobacco processing industry Active EP2471391B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010056606A DE102010056606A1 (en) 2010-12-28 2010-12-28 Cutting device for an extrusion machine of the tobacco processing industry and method for adjusting the position of a grinding wheel holder of a device for grinding in a cutting device for a strand machine of the tobacco processing industry

Publications (3)

Publication Number Publication Date
EP2471391A2 EP2471391A2 (en) 2012-07-04
EP2471391A3 EP2471391A3 (en) 2015-01-21
EP2471391B1 true EP2471391B1 (en) 2017-04-12

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EP11195526.6A Active EP2471391B1 (en) 2010-12-28 2011-12-23 Cutting device for a rod maker of the tobacco processing industry and method for adjusting the position of a grinding wheel holder of an apparatus for grinding in a cutting device for a rod maker of the tobacco processing industry

Country Status (4)

Country Link
EP (1) EP2471391B1 (en)
CN (1) CN102524947B (en)
DE (1) DE102010056606A1 (en)
PL (1) PL2471391T3 (en)

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CN103371434B (en) * 2012-04-26 2015-02-11 龙岩烟草工业有限责任公司 Mounting device for knife grinding wheel of cigarette making machine
CN103143993B (en) * 2013-04-03 2015-01-21 湖南大学 Grinding and sharpening device for adjustable high-speed dynamic following cutting blade
CN103640045B (en) 2013-09-09 2016-08-10 宇宙纸巾技术有限公司 Knife sharpening device and cutting machine
DE102014211459A1 (en) 2014-06-16 2015-12-17 Hauni Maschinenbau Ag Cutting device for cutting rod-shaped products of the tobacco-processing industry
CN107361401B (en) * 2016-05-12 2019-02-05 秦皇岛烟草机械有限责任公司 A kind of chopping machine knife and knife grinding equipment
DE102017116111A1 (en) * 2017-07-18 2019-01-24 Hauni Maschinenbau Gmbh Device for cutting rod-shaped articles and machine with such a device
CN111251082B (en) * 2020-03-03 2020-10-23 季玲敏 Slitting cutter equipment of polishing
CN113522442A (en) * 2021-08-25 2021-10-22 淮北泽兰科技有限责任公司 Crushing system for processing refractory material
CN114916697B (en) * 2022-06-13 2023-06-20 河南中烟工业有限责任公司 Dismantle reliable emery wheel connection pad and tobacco cutter emery wheel seat
CN115431110A (en) * 2022-11-08 2022-12-06 江苏威泽智能科技股份有限公司 Blade grinding machine tool

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Also Published As

Publication number Publication date
PL2471391T3 (en) 2017-09-29
EP2471391A2 (en) 2012-07-04
CN102524947A (en) 2012-07-04
EP2471391A3 (en) 2015-01-21
CN102524947B (en) 2016-12-21
DE102010056606A1 (en) 2012-06-28

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